documentcloud/underscore — pull request #460 by sghill (2012-02-03 05:46:58+00:00)
Title: Add convenience function for reducing from 0: sum

After using underscore for a while, I'm finding our most common use case for `reduce` is just adding from 0. It'd be nice to have a shortcut function in underscore that we could just pass a list of numbers or objects.

This `sum` is one way to do that, and it comes with tests and updated docs!